Promotes Natural Sleep Patterns. Melatonin is a hormone that is produced by the pineal gland in the brain. Its secretion is determined by light and seasonal patterns and dictates the circadian rhythms (sleep/wake cycle) of the body. Supplementation has produced remarkable benefits in individuals who work night shifts, travel across multiple time zones or have difficulty sleeping. Supports Normal Sleep Patterns. Dictates the Circadian Rhythms (Sleep/Wake Cycle). Reduces the effects of Jet Lag